Flower, Weed
smooth blue aster
AcheneAchene:
A dry, hard, one-chambered, one-seeded indehiscent fruit, as in buckwheat (Fagopyrum) or sunflower (Helianthus). The fruit wall is not united with the seed coat.
Oblanceolate
Gray, black, or red
Rough
There are four or five white, strong longitudinal ribs.
There is a deep constriction below the pappusPappus:
Modified calyx in Asteraceae, composed of hairs, bristles, awns, or scales. The pappus-like structure attached to milkweed seeds is termed a coma. 
crown at the apexApical:
The distal end of the fruit or seed away from the point of attachment or attachment scar.
.
Not listed
Not included
Asteraceae
Symphyotrichum laeve (L.) Á. Löve & D. Löve
